How to Add Brightness to Xiaomi Phone: The Complete Guide

Users of budget and mid-budget smartphones often face a situation where standard level of backlight display is not enough, this is especially true when using the device in bright sun or in conditions of very strong artificial lighting. Maximum brightness in the factory is often limited software to save battery power, but this situation can be corrected.

Owners of Xiaomi, Redmi and POCO have access to hidden system settings that unlock the potential of the matrix. Proper calibration will not only make the picture juicier, but also improve the readability of text in all conditions. We will look at both standard methods and advanced methods through the engineering menu.

It is worth considering that an excessive increase in the power of the backlight can lead to faster wear. AMOLED-So it's important to balance eye comfort with the resources of the gadget. We'll go into the safe algorithms next.

Basic setting of the slider and autobrightness

The first step should always be to check the standard interface settings. The MIUI operating system or the new HyperOS has its own screen control algorithm, which sometimes doesn't work correctly, so you need to open the notification curtain and make sure that the brightness slider is twisted to the end.

Often the problem lies in the light sensor, which is not reading the environment correctly. If the automatic adjustment function is active, the phone can artificially lower the reading even in good light. Turn this option off via the Settings menu → Screen → Brightness level and set the values manually.

Remember that in some use cases (e.g., watching video in the dark), the system may forcefully limit the glow to protect vision. Reading or Vision Protection also affects the final image, making it dimmer and warmer.

• 🔍 Check if the energy saving mode is activated, which often cuts the brightness.
• 🔍 Make sure the proximity sensor at the top of the screen is not covered with a tight case.
• 🔍 Try changing the theme of the design, as some skins have their own display profiles.

⚠️ Warning: Constant display operation at 100% power for several hours can lead to noticeable heating of the smartphone case.

Using the CIT Engineering Menu for calibration

For a deeper setup, there's a special diagnostic interface known as the CIT, which is designed for engineers, but is also available to ordinary users through a special code, and allows you to test and calibrate various modules, including the display.

To get to the menu, open the Phone app and dial the combination ##6484##. If the code didn't work, try ##3646633##. In the list that opens, look for the item associated with the screen (often called LCD or Display), where you can run tests that can "wake up" the full potential of the backlight.

Some firmware versions within the engineering menu have a Common tab that has Screen settings, where you can find Color Temperature or Brightness that you can zoom in on, but beware: changing unknown settings can lead to incorrect color displays.

The engineering menu is a powerful tool, but it requires care. Don't change the values at random if you don't understand their purpose. It's best to reset the screen to the factory settings through the same menu if you notice the artifacts after the experiments.

Activation of the extended color range

Many modern Xiaomi smartphones feature HDR10+-enabled matrices and enhanced color gamut. By default, these features can be turned off to save energy. The inclusion of these options often makes the image visually brighter and contrast, even if the physical power of the backlight does not change.

Go to Settings → Screen → Color scheme. Select saturated or professional. Professional mode has fine-tuning of the gamut. Shifting sliders to increase the gamut can add "light" to the shadows, which will subjectively increase the brightness of the picture.

It's also worth checking the True Color settings, which adjusts the shades to the ambient light, and sometimes turning it off makes the screen look sturdy and brighter because the system stops constantly putting out the blue and green subpixels.

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Using a dark topic on AMOLED-screens save charge, but white text on a black background may seem less bright due to the features of subpixel rendering.

Third-party applications for enhancing illumination

If you don't have enough system tools, Google Play apps come to the rescue, which are color filter overlays or gamma-correction software, and Brightness Slider & Widget or similar is a popular solution.

These utilities can force the brightness above the system limit, and they create a white, translucent layer on top of the interface that, when mixed with the main image, gives an effect of increased brightness, and this is a software emulation, but the visual result is noticeable.

When using third-party software, it's important to pay attention to the permissions you're asking for, filter applications require the right to display over other windows, without which they won't be able to adjust the image in real time.

• 📱 Look for apps with high rankings and a lot of downloads.
• 📱 Avoid programs that require Root Rights without an urgent need.
• 📱 Check if the application adds extra load to the processor.

⚠️ Warning: Software-based brightness enhancement through filter overlay can distort color reproduction, making colors less natural and "washed out".

Problems with protective film and covers

Often, trivial physical factors reduce the brightness of the screen by 15-20%. Cheap protective glass or matte films have a low light transmittance. If you pasted the film a long time ago, it could become cloudy or covered with microscratch that scatters light.

Also, pay attention to the design of the protective case. Some models have high sidebars that create shadows around the edges of the screen or, worse, partially overlap the light sensor, resulting in the phone "thinking" that it is in the dark, and reduces the brightness.

Regular screen cleaning is also important, because fatty plaque and dust create a fog effect that makes it harder for light to penetrate, and use microfiber and special sprays to clean the optics to return the display to its original transparency.

The Impact of Developer Mode and GPU

For advanced users, the Developer Menu is available, and to activate it, you need to click 7 times on the build number in the About Phone section. There are options in this menu that affect the rendering of graphics.

Find the item "Force GPU rendering" -- Although this feature primarily speeds up the interface in older applications, it can change the way colors and contrast are handled. However, on modern devices, the effect may not be noticeable.

More interesting is the point about simulating color vision abnormalities, and make sure it has a "Disconnected" value, which sometimes causes a color inversion or a strange blackout that users perceive as low brightness.

adb shell settings put system screen_brightness 255

This command can be executed via a computer by connecting the phone to a USB debugging device, and it compulsorily sets the maximum brightness value at the system level, and it works even if the slider in the interface doesn't reach the end.

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Use of the ADB-commands - the most reliable way to bypass the software brightness limits without installing third-party software.

Frequently Asked Questions (FAQ)